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  "markdown": "Venture firm.\n\nWebsite: https://www.altimeter.com\n\n## Companies on Anchor Terminal\n\n- **Anthropic**, Series F, September 2025, Series G, February 2026, Series H, May 2026, led a round, through Altimeter\n  - [Claude API](https://www.anchorterminal.com/tools/anthropic-api.md), graded BB, 77.3/100\n  - [Claude Agent SDK](https://www.anchorterminal.com/tools/claude-agent-sdk.md), graded BB, 70.1/100\n  - [Claude Code](https://www.anchorterminal.com/tools/claude-code.md), graded C, 59.9/100\n  - Source: https://www.anthropic.com/news/anthropic-raises-series-f-at-usd183b-post-money-valuation\n- **Baseten**, Series E, January 2026, through Altimeter\n  - [Baseten](https://www.anchorterminal.com/tools/baseten.md), graded B, 66.7/100\n  - [elephant-1](https://www.anchorterminal.com/tools/elephant-1.md), graded D, 47.6/100\n  - [mammoth-1](https://www.anchorterminal.com/tools/mammoth-1.md), graded D, 47.7/100\n  - Source: https://www.baseten.co/blog/series-e/\n- **Anthropic, PBC**, Series F, September 2025, Series G, February 2026, Series H, May 2026, led a round, through Altimeter\n  - [Claude Duet](https://www.anchorterminal.com/tools/claude-duet.md), graded F, 17.9/100\n  - Source: https://www.anthropic.com/news/anthropic-raises-series-f-at-usd183b-post-money-valuation\n- **ClickHouse**, Series B, October 2021, Series C extension, October 2025, led a round, through Altimeter\n  - [ClickHouse MCP Server](https://www.anchorterminal.com/tools/clickhouse-mcp-server.md), graded B, 64.6/100\n  - Source: https://clickhouse.com/blog/click-house-raises-a-250m-series-b-at-a-2b-valuationand-we-are-hiring\n- **Crusoe**, Series E, October 2025\n  - [Crusoe Cloud](https://www.anchorterminal.com/tools/crusoe-cloud.md), graded B, 63.4/100\n  - Source: https://www.crusoe.ai/resources/newsroom/crusoe-announces-series-e-funding\n- **Deel, Inc.**, Series D, October 2021\n  - [Deel](https://www.anchorterminal.com/tools/deel.md), graded B, 69.1/100\n  - Source: https://www.deel.com/blog/weve-raised-our-series-d/\n- **Cognition AI, Inc.**, Series E, September 2026, through Altimeter\n  - [Devin](https://www.anchorterminal.com/tools/devin.md), graded C, 55.7/100\n  - Source: https://cognition.com/blog/series-e\n- **Elorian**, through Altimeter\n  - [Glimpse](https://www.anchorterminal.com/tools/elorian-glimpse.md), graded D, 49/100\n  - Source: https://elorian.ai/\n- **Glean Technologies, Inc.**, Series E, September 2024, Series F, June 2025, led a round, through Altimeter\n  - [Glean](https://www.anchorterminal.com/tools/glean.md), graded B, 69.9/100\n  - Source: https://www.glean.com/press/glean-announces-over-260-million-series-e-and-next-generation-prompting-as-it-brings-work-ai-to-the-enterprise\n- **OpenAI**, $6.6B round, October 2024, $40B round, March 2025\n  - [GPT-Live](https://www.anchorterminal.com/tools/gpt-live.md), graded B, 66.9/100\n  - [gpt-oss-120b](https://www.anchorterminal.com/tools/gpt-oss-120b.md), graded BB, 70.2/100\n  - [gpt-oss-20b](https://www.anchorterminal.com/tools/gpt-oss-20b.md), graded B, 69.9/100\n  - [OpenAI Agents SDK](https://www.anchorterminal.com/tools/openai-agents-sdk.md), graded AA, 86.2/100\n  - [OpenAI API](https://www.anchorterminal.com/tools/openai-api.md), graded A, 82.9/100\n  - [OpenAI Codex](https://www.anchorterminal.com/tools/openai-codex.md), graded BB, 73.5/100\n  - [OpenAI Decisions API](https://www.anchorterminal.com/tools/openai-decisions-api.md), graded BB, 73.1/100\n  - [Dots](https://www.anchorterminal.com/tools/openai-dots.md), graded F, 28.8/100\n  - [OpenAI embeddings](https://www.anchorterminal.com/tools/openai-embeddings.md), graded BB, 72.2/100\n  - [OpenAI Guardrails](https://www.anchorterminal.com/tools/openai-guardrails.md), graded B, 69.5/100\n  - [OpenAI Image API](https://www.anchorterminal.com/tools/openai-image-api.md), graded BB, 72.4/100\n  - [OpenAI Moderation API](https://www.anchorterminal.com/tools/openai-moderation.md), graded BB, 71.4/100\n  - [OpenAI Realtime API](https://www.anchorterminal.com/tools/openai-realtime.md), graded B, 63.4/100\n  - [OpenAI Speech to Text](https://www.anchorterminal.com/tools/openai-speech-to-text.md), graded BB, 72.6/100\n  - Source: https://www.nbcnewyork.com/news/business/money-report/openai-closes-40-billion-funding-round-largest-private-tech-deal-on-record/6206861/\n- **Inngest**, Series A, September 2025, led a round, through Altimeter\n  - [Inngest](https://www.anchorterminal.com/tools/inngest.md), graded B, 66.1/100\n  - Source: https://www.inngest.com/blog/announcing-inngest-series-a\n- **LiveKit Incorporated**, Series A, June 2024, Series B, April 2025, Series C, January 2026, led a round, through Altimeter\n  - [LiveKit Agents](https://www.anchorterminal.com/tools/livekit-agents.md), graded BB, 72.5/100\n  - [LiveKit Telephony](https://www.anchorterminal.com/tools/livekit-telephony.md), graded B, 67.6/100\n  - Source: https://livekit.com/blog/livekit-series-a\n- **Plaid**, Series D, April 2021, led a round\n  - [Plaid](https://www.anchorterminal.com/tools/plaid.md), graded B, 69.8/100\n  - Source: https://techcrunch.com/2021/04/07/plaid-raises-425m-series-d-from-altimeter-as-it-charts-a-post-visa-future/\n- **Plaid Inc.**, Series D, April 2021, led a round\n  - [Plaid Identity Verification](https://www.anchorterminal.com/tools/plaid-identity-verification.md), graded B, 67.1/100\n  - Source: https://techcrunch.com/2021/04/07/plaid-raises-425m-series-d-from-altimeter-as-it-charts-a-post-visa-future/\n- **Ramp Business Corporation**, Series C, August 2021, Funding round, March 2022, through Altimeter\n  - [Ramp](https://www.anchorterminal.com/tools/ramp.md), graded C, 57.3/100\n  - Source: https://ramp.com/blog/ramp-series-c\n- **Workato**\n  - [Workato API + MCP](https://www.anchorterminal.com/tools/workato.md), graded C, 58/100\n  - Source: https://www.workato.com/about_us\n\n## Where they invest\n\n- Model APIs \u0026 inference, 3\n- Agent harnesses, 3\n- Decision models, 3\n- Conversational voice agents, 3\n- Agent frameworks \u0026 SDKs, 2\n- GPU \u0026 serverless compute, 2\n- Personal assistants, 2\n- Open-weight models, 2\n- Guardrails \u0026 safety filters, 2\n- Databases \u0026 files, 1\n- HR \u0026 employee operations, 1\n- Company knowledge \u0026 data catalogues, 1\n- Embeddings \u0026 rerankers, 1\n- Image generation, 1\n- Speech-to-text, 1\n- Human approval \u0026 handoff, 1\n- Phone calling \u0026 voice transport, 1\n- Bank data \u0026 open banking, 1\n- Identity \u0026 business verification, 1\n- Spend management \u0026 procurement, 1\n- Workflow automation, 1\n\n## Founders they backed\n\n- [Dario Amodei](https://www.anchorterminal.com/people/dario-amodei/), Anthropic\n- [Daniela Amodei](https://www.anchorterminal.com/people/daniela-amodei/), Anthropic\n- [Tom Brown](https://www.anchorterminal.com/people/tom-brown/), Anthropic\n- [Jack Clark](https://www.anchorterminal.com/people/jack-clark/), Anthropic\n- [Jared Kaplan](https://www.anchorterminal.com/people/jared-kaplan/), Anthropic\n- [Sam McCandlish](https://www.anchorterminal.com/people/sam-mccandlish/), Anthropic\n- [Chris Olah](https://www.anchorterminal.com/people/chris-olah/), Anthropic\n- [Tuhin Srivastava](https://www.anchorterminal.com/people/tuhin-srivastava/), Baseten\n- [Amir Haghighat](https://www.anchorterminal.com/people/amir-haghighat/), Baseten\n- [Phil Howes](https://www.anchorterminal.com/people/phil-howes/), Baseten\n- [Pankaj Gupta](https://www.anchorterminal.com/people/pankaj-gupta/), Baseten\n- [Karan Ahuja](https://www.anchorterminal.com/people/karan-ahuja/), Anthropic, PBC\n- [Aaron Katz](https://www.anchorterminal.com/people/aaron-katz/), ClickHouse\n- [Alexey Milovidov](https://www.anchorterminal.com/people/alexey-milovidov/), ClickHouse\n- [Yury Izrailevsky](https://www.anchorterminal.com/people/yury-izrailevsky/), ClickHouse\n- [Alex Bouaziz](https://www.anchorterminal.com/people/alex-bouaziz/), Deel, Inc.\n- [Shuo Wang](https://www.anchorterminal.com/people/shuo-wang/), Deel, Inc.\n- [Scott Wu](https://www.anchorterminal.com/people/scott-wu/), Cognition AI, Inc.\n- [Steven Hao](https://www.anchorterminal.com/people/steven-hao/), Cognition AI, Inc.\n- [Walden Yan](https://www.anchorterminal.com/people/walden-yan/), Cognition AI, Inc.\n- [Andrew Dai](https://www.anchorterminal.com/people/andrew-dai/), Elorian\n- [Yinfei Yang](https://www.anchorterminal.com/people/yinfei-yang/), Elorian\n- [Seth Neel](https://www.anchorterminal.com/people/seth-neel/), Elorian\n- [Arvind Jain](https://www.anchorterminal.com/people/arvind-jain/), Glean Technologies, Inc.\n- [T.R. Vishwanath](https://www.anchorterminal.com/people/t-r-vishwanath/), Glean Technologies, Inc.\n- [Tony Gentilcore](https://www.anchorterminal.com/people/tony-gentilcore/), Glean Technologies, Inc.\n- [Sam Altman](https://www.anchorterminal.com/people/sam-altman/), OpenAI and Stripe, OpenAI\n- [Elon Musk](https://www.anchorterminal.com/people/elon-musk/), OpenAI and Stripe, OpenAI\n- [Greg Brockman](https://www.anchorterminal.com/people/greg-brockman/), OpenAI and Stripe, OpenAI\n- [Ilya Sutskever](https://www.anchorterminal.com/people/ilya-sutskever/), OpenAI and Stripe, OpenAI\n- [John Schulman](https://www.anchorterminal.com/people/john-schulman/), OpenAI and Stripe, OpenAI\n- [Wojciech Zaremba](https://www.anchorterminal.com/people/wojciech-zaremba/), OpenAI and Stripe, OpenAI\n- [Trevor Blackwell](https://www.anchorterminal.com/people/trevor-blackwell/), OpenAI and Stripe, OpenAI\n- [Vicki Cheung](https://www.anchorterminal.com/people/vicki-cheung/), OpenAI and Stripe, OpenAI\n- [Andrej Karpathy](https://www.anchorterminal.com/people/andrej-karpathy/), OpenAI and Stripe, OpenAI\n- [Durk Kingma](https://www.anchorterminal.com/people/durk-kingma/), OpenAI and Stripe, OpenAI\n- [Pamela Vagata](https://www.anchorterminal.com/people/pamela-vagata/), OpenAI and Stripe, OpenAI\n- [Russ d’Sa](https://www.anchorterminal.com/people/russ-d-sa/), LiveKit Incorporated\n- [David Zhao](https://www.anchorterminal.com/people/david-zhao/), LiveKit Incorporated\n- [Zach Perret](https://www.anchorterminal.com/people/zach-perret/), Plaid\n- [William Hockey](https://www.anchorterminal.com/people/william-hockey/), Plaid\n\n## Questions\n\n### Which AI tools has Altimeter Capital invested in?\n\nAnchor Terminal lists Anthropic, Baseten, Anthropic, PBC, ClickHouse, Crusoe, Deel, Inc., Cognition AI, Inc., Elorian, Glean Technologies, Inc., OpenAI, Inngest, LiveKit Incorporated, Plaid, Plaid Inc., Ramp Business Corporation and Workato backed by Altimeter Capital.\n\n### How are Altimeter Capital's companies graded?\n\nOn Anchor Terminal's benchmark, Claude API (BB, 77.3), Claude Agent SDK (BB, 70.1), Claude Code (C, 59.9), Baseten (B, 66.7), elephant-1 (D, 47.6), mammoth-1 (D, 47.7), Claude Duet (F, 17.9), ClickHouse MCP Server (B, 64.6), Crusoe Cloud (B, 63.4), Deel (B, 69.1), Devin (C, 55.7), Glimpse (D, 49), Glean (B, 69.9), GPT-Live (B, 66.9), gpt-oss-120b (BB, 70.2), gpt-oss-20b (B, 69.9), OpenAI Agents SDK (AA, 86.2), OpenAI API (A, 82.9), OpenAI Codex (BB, 73.5), OpenAI Decisions API (BB, 73.1), Dots (F, 28.8), OpenAI embeddings (BB, 72.2), OpenAI Guardrails (B, 69.5), OpenAI Image API (BB, 72.4), OpenAI Moderation API (BB, 71.4), OpenAI Realtime API (B, 63.4), OpenAI Speech to Text (BB, 72.6), Inngest (B, 66.1), LiveKit Agents (BB, 72.5), LiveKit Telephony (B, 67.6), Plaid (B, 69.8), Plaid Identity Verification (B, 67.1), Ramp (C, 57.3) and Workato API + MCP (C, 58).\n\nInvestors are named from the companies' own announcements, the investors' own pages, Y Combinator's company pages, public filings and news reports of a round, each with its source. An investor isn't a sign of quality, and nobody can pay to be listed or to change a grade. To correct something or have a page removed, write to privacy@anchorterminal.com.\n",
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